Add support for API accessors that prohibit overwriting by accessors...

src/apinatives.js

Index: src/apinatives.js
===================================================================
--- src/apinatives.js	(revision 654)
+++ src/apinatives.js	(working copy)
@@ -82,6 +82,8 @@
 function ConfigureTemplateInstance(obj, data) {
   var properties = %GetTemplateField(data, kApiPropertyListOffset);
   if (properties) {
+    // Disable access checks while instantiating the object.
+    var requires_access_checks = %DisableAccessChecks(obj);
     for (var i = 0; i < properties[0]; i += 3) {
       var name = properties[i + 1];
       var prop_data = properties[i + 2];
@@ -89,5 +91,6 @@
       var value = Instantiate(prop_data, name);
       %SetProperty(obj, name, value, attributes);
     }
+    if (requires_access_checks) %EnableAccessChecks(obj);

[Kasper Lund, 2008/10/30 12:32:27]

Should this be in some sort of try-finally to play it safely?

   }
 }